27.06.18 17:46, Ethan Furman пише:
Question:
Should `SomeClass` be an enum member? When would it be useful to
have an embedded class in an Enum be an enum member?
The only example I have seen so far of nested classes in an Enum is when
folks want to make an Enum of Enums, and the nested Enum should not
itself be an enum member. Since the counter-example already works I
haven't seen any requests for it. ;)
So I'm asking the community: What real-world examples can you offer for
either behavior? Cases where nested classes should be enum members, and
cases where nested classes should not be members.
What would be a benefit of making a class nested if it not be an enum
member? Nested functions become methods, but there are no relations
between a nested class or its instances and the outer class or its
instances.
The current behavior looks understandable to me. Functions are
descriptors, but classes are not. Making a nested class a member you
don't lost anything, because you always can make it not-nested if you
don't want it be a member. But when a nested class is not a member, you
would lost the possibility of making it a member (and this may break
existing code).
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